[bombela]

Some LEDs have an integrated chip, making it easy to daisy chain them as a big shift register. Example: https://www.adafruit.com/product/2343 You can find many similar type of LED in strips, trough holes etc. Some are faster than others. Addressable strips can be used to make big displays it seems: http://hackaday.com/2013/02/25/building-huge-displays-with-l...